The Mayo Clinic explains that eating foods rich in calcium and vitamin D benefits those with hyperthyroidism because the condition contributes to the thinning of bones. Although diet alone cannot cure or prevent hyperthyroidism, eating a healthy diet complete with plenty of fruits and vegetables helps to minimize the symptoms of hyperthyroidism.
According to Endocrine Web, berries help increase immune system strength because of the high level of antioxidants they contain. Choose from blueberries, blackberries, strawberries or raspberries and be sure to eat one serving daily to recognize the benefits. Cruciferous vegetables, such as broccoli, cabbage, Brussels sprouts and kale are all from the goitrogen family and they help reduce the amount of thyroid hormone the thyroid gland produces. Eat at least one serving of cruciferous vegetables daily.
Salmon and turkey are two lean sources of protein that also contribute to a healthy diet for people with hyperthyroidism. Eat lean proteins daily to maintain a healthy weight and body function. For people who do not eat meat or fish, beans and nuts are good sources of lean protein. Yogurt, cheese and milk are also valuable sources of calcium, and Endocrine Web advises eating three servings of these each day to maintain strong bones.